Can two girls--one enchanted, one the enchantress--save their kingdom...and each other?

The kingdom of Réveillon is under a terrible curse--flowers won't bloom and snow falls black from the sky. Magic could change things, but all of it is said to be trapped within a golden crown ruthlessly guarded by the king. Seventeen-year-old Odile, raised by vengeful sorcerer Rothbarte, has been trained to infiltrate the palace to steal the crown back and release the power within. When it comes time to set the plot in motion, Odile uses an enchanted necklace to transform Marie, a friend of the young dauphin, into a swan--leaving Odile free to assume her identity and gain access to the royal court.

But when the king is brutally murdered, chaos ensues. Odile's own brother gets accused of being behind the assassination, leaving Odile desperate to free him...even if it means putting her mission on hold to find the real killer. She's forced to team up with none other than Marie, the girl who rightfully distrusts her--and who Odile might have feelings for.

As they investigate, they hear whispers that the king's murder was not at the hands of man, but beast. Torn between loyalty to Rothbarte and her growing feelings for Marie, Odile becomes tangled in a web of treachery and deceit. To save her kingdom, she must find the true path to magic...and find the real killer before they--or it--strikes again.